How to get Secret Letters in Duet Night Abyss
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Secret Letter in Duet Night Abyss is an item needed to challenge Covert Commissions and obtain rewards, which then can be used to get new characters, weapons, and Demon Wedges.
Secret Letter in Duet Night Abyss is an item needed to challenge Covert Commissions and obtain rewards, which then can be used to get new characters, weapons, and Demon Wedges.